Boosting circuit compensating for voltage fluctuation due to ope

Details Boosting circuit compensating for voltage fluctuation due to ope Boosting circuit compensating for voltage fluctuation due to ope

1999-06-03

2000-11-28

Nelms, David

Static information storage and retrieval

Powering

36518909, 36518911, G11C 700

Patent

active

061544116

ABSTRACT:
A boosting circuit is provided with a voltage detection circuit, first through fourth oscillators, and first through fourth charge pump circuits. The voltage detection circuit compares each of the first through fourth voltages obtained by dividing a boosted voltage with a reference voltage, and generates first through fourth activation signals. The first through fourth oscillators output pulse signals at first through fourth frequencies, respectively, as first through fourth drive signals. The first through fourth charge pump circuits operate in response to the first through fourth drive signals, respectively, and boost the boosted voltage. Accordingly, it is possible to provide a stable boosted voltage, with suppressing over shoot and under shoot with respect to the boosted voltage as a target.

REFERENCES:
patent: 5307315 (1994-04-01), Oowaki et al.
patent: 5889719 (1999-03-01), Yoo et al.

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